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Detecting the halo heating from AGN feedback with ALMA
- Source :
- Monthly Notices of the Royal Astronomical Society
- Publication Year :
- 2019
- Publisher :
- arXiv, 2019.
-
Abstract
- The Sunyaev-Zel'dovich (SZ) effect can potentially be used to investigate the heating of the circumgalactic medium and subsequent suppression of cold gas accretion onto the host galaxy caused by quasar feedback. We use a deep ALMA observation of HE0515-4414 in band 4, the most luminous quasar known at the peak of cosmic star formation (z=1.7), to search for the SZ signal tracing the heating of the galaxy's halo. ALMA's sensitivity to a broad range of spatial scales enables us to disentangle emitting compact sources from the negative, extended SZ signal. We obtain a marginal S-Z detection (~3.3$\sigma$) on scales of about 300 kpc (30-40 arcsec), at the 0.2 mJy level, 0.5 mJy after applying a correction factor for primary beam attenuation and flux that is resolved out by the array. We show that our result is consistent with a simulated ALMA observation of a similar quasar in the FABLE cosmological simulations. We emphasise that detecting an SZ signal is more easily achieved in the visibility plane than in the (inferred) images. We also confirm a marginal detection (3.2$\sigma$) of a potential SZ dip on smaller scales (<br />Comment: 13 pages, 16 figures. Accepted for publication by MNRAS
- Subjects :
- Astrophysics::High Energy Astrophysical Phenomena
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
7. Clean energy
high-redshift [Galaxies]
Settore FIS/05 - Astronomia e Astrofisica
galaxies: high-redshift
quasars: general
0103 physical sciences
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
Physics
COSMIC cancer database
010308 nuclear & particles physics
Star formation
Attenuation
quasars: individual HE 0515-4414
Astrophysics::Instrumentation and Methods for Astrophysics
Astronomy and Astrophysics
Quasar
general [Quasars]
Astrophysics - Astrophysics of Galaxies
Galaxy
Accretion (astrophysics)
Space and Planetary Science
techniques: interferometric
individual HE 0515-4414 [Quasars]
Astrophysics of Galaxies (astro-ph.GA)
interferometric [Techniques]
Halo
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Accession number :
- edsair.doi.dedup.....4ada71457638c37d68e83e7ace8110c5
- Full Text :
- https://doi.org/10.48550/arxiv.1910.02088